A dataset provided by the European Space Agency

Name: A long XMM-Newton observation of the least luminous Seyfert galaxy NGC4395
Published: 2004-12-18T00:00:00Z

Proposal ID	014283
Title	A long XMM-Newton observation of the least luminous Seyfert galaxy NGC4395
Download Data Associated to the proposal	https://nxsa.esac.esa.int/nxsa-sl/servlet/data-action-aio?obsno=0142830101
DOI	https://doi.org/10.5270/esa-rp294hl
Principal Investigator, PI	Dr Kazushi Iwasawa
Abstract	We propose a continuous 110 ks XMM-Newton observation of the dwarfSeyfert galaxy NGC4395. The active nucleus harbours a small mass blackhole, M(BH)<8e4Msun, and the X-ray source is extremely variable bothin flux and spectral shape. The proposed observation is aimed toinvestigate the X-ray light curve and the spectral variability due toa complex warm absorber. A break in the power spectrum is expected forthis small system and will be used to test the scaling hypothesis ofthe black hole mass. The response of the warm absorber revealed from aspectral variability study will constrain the location of the absorber, which is expected to be very close to the central source.
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Instrument	EMOS1, EMOS2, EPN, OM, RGS1, RGS2
Temporal Coverage	2003-11-30T03:17:55Z/2003-12-01T10:47:40Z
Version	17.56_20190403_1200
Mission Description	The European Space Agencys (ESA) X-ray Multi-Mirror Mission (XMM-Newton) was launched by an Ariane 504 on December 10th 1999. XMM-Newton is ESAs second cornerstone of the Horizon 2000 Science Programme. It carries 3 high throughput X-ray telescopes with an unprecedented effective area, and an optical monitor, the first flown on a X-ray observatory. The large collecting area and ability to make long uninterrupted exposures provide highly sensitive observations. Since Earths atmosphere blocks out all X-rays, only a telescope in space can detect and study celestial X-ray sources. The XMM-Newton mission is helping scientists to solve a number of cosmic mysteries, ranging from the enigmatic black holes to the origins of the Universe itself. Observing time on XMM-Newton is being made available to the scientific community, applying for observational periods on a competitive basis.
Creator Contact	https://www.cosmos.esa.int/web/xmm-newton/xmm-newton-helpdesk
Date Published	2004-12-18T00:00:00Z
Last Update	2025-01-27
Keywords	"active nucleus harbours", "xmm newton", "xray source", "warm absorber", "spectral variability", "XMM-Newton", "NGC4395", "spectral shape", "power spectrum", "central source", "blackhole mass", "complex warm absorber", "XMM", "scaling hypothesis", "mass black hole", "xray light curve"
Publisher And Registrant	European Space Agency
Credit Guidelines	European Space Agency, Dr Kazushi Iwasawa, 2004, 'A long XMM-Newton observation of the least luminous Seyfert galaxy NGC4395', 17.56_20190403_1200, European Space Agency, https://doi.org/10.5270/esa-rp294hl